Analytic solutions for generalized <inline-formula> <tex-math> <?CDATA ${\mathscr{P}}{\mathscr{T}}$?> </tex-math><mml:math><mml:mrow><mml:mi mathvariant='script'>P</mml:mi><mml:mi mathvariant='script'>T</mml:mi></mml:mrow></mml:math> <inline-graphic xmlns:xlink="https://www.w3.org/1999/xlink" xlink:href="cpb_28_11_114202_ieqn1.gif"/></inline-formula>-symmetric Rabi models<xref rid="cpb_28_11_114202_fn1" ref-type="fn">*</xref><fn id="cpb_28_11_114202_fn1"><label>*</label><p>Project supported in part by the National Natural Science Foundation of China (Grant No. 11874251), the Scientific Research Starting Foundation of Shaanxi Normal University, China, and the Scientific Research Plan Funded by the Education Department of Shaanxi Province, China (Grant No. 17JK0786).</p></fn>

Analytic solutions for generalized

-symmetric Rabi models**

Project supported in part by the National Natural Science Foundation of China (Grant No. 11874251), the Scientific Research Starting Foundation of Shaanxi Normal University, China, and the Scientific Research Plan Funded by the Education Department of Shaanxi Province, China (Grant No. 17JK0786).

Dong Yuanhao¹, Zhang Wen-Jing^{2, †}, Liu Jing¹, Xie Xiao-Tao^{1, ‡}

The evolution of the population |C_i|² for the PT -symmetric Rabi model driven by a quadratic nonlinear external field [f(z) = 2λ z²]. Here the parameters are chosen as the same to those in Fig. 3, except for z ∈ [−2.5, 2.5].